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查询订购单号(字符型,长度为4)尾字符是“1”的错误命令是

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SELECT*FROM订单WHERE HEAD(订购单号,1)=“P”  SELECT*FROM订单WHERE LEFT(订购单号,1)=“P”  SELECT*FROM订单WHERE“P”$订购单号  SELECT*FROM订单WHERE RIGHT(订购单号,1)=“P”  
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SELECT名称,联系人,电话号码,订单号FROM客户,订购单WHERE客户.客户号=订购单.客户号AND订购日期IS NULL  SELECT名称,联系人,电话号码,订单号FROM客户,订购单WHERE客户.客户号=订购单.客户号AND订购日期=NULL  SELECT名称,联系人,电话号码,订单号FROM客户,订购单FOR客户.客户号=订购单.客户号AND订购日期IS NULL  SELECT名称,联系人,电话号码,订单号FROM客户,订购单FOR客户.客户号=订购单.客户号AND订购日期=NULL  
SELECT*FROM订单WHEREHEAD(订购单号,1)="P"  SELECT*FROM订单WHERELEFT(订购单号,1)="P"  SELECT*FROM订单WHERE="P"$订购单号  SELECT*FROM订单WHERERIGHT(订购单号,1)="P"  
SELECT COUNT(DISTINCT订单号),AVG(数量*单价) FROM产品JOIN订购单名细ON产品.产品号=订购单名细.产品号  SELECT COUNT(订单号),AVG(数量*单价) FROM产品JOIN订购单名细ON产品.产品号=订购单名细.产品号  SELECT COUNT(DISTINCT订单号),AVG(数量*单价) FROM产品,订购单名细ON产品.产品号=订购单名细.产品号  SELECT COUNT(订单号),AVG(数量*单价) FROM产品,订购单名细ON产品.产品号=订购单名细.产品号  
SELECT名称,联系人,电话号码,订单号FROM客户,订购单WHERE客户.订单号=订购单.订单号and订购日期IS NULL  SELECT名称,联系人,电话号码,订单号FROM客户,订购单WHERE客户.订单号=订购单.订单号and订购日期=NULL  SRLECT名称,联系人,电话号码,订单号FROM客户,订购单FOR客户.订单号=订购单.订单号and订购日期IS NULL  SELECT名称,联系人,电话号码,订单号FROM客户,订购单FOR客户.订单号=订购单.订单号and订购日期=NULL  
SELECT*FROM订单WHERE HEAD(订购单号,1)="p"  SELECT*FROM订单WHERE LEFT(订购单号,1)="p"  SELECT*FROM订单WHERE"p"$订购单号  SELECT*FROM订单WHERE RIGHT(订购单号,1)="p"  
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SELECT*FROM订单WHERE HEAD(订购单号,1)="p"  SELECT*FROM订单WHERE LEFT(订购单号,1)="p"  SELECT*FROM订单WHERE"p"$订购单号  SELECT*FROM订单WHERE RIGHT(订购单号,1)="p"  
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SELECT*FROM订单WHERE HEAD(订购单号,1)="p"  SELECT*FROM订单WHERE LEFT(订购单号,1)="p"  SELECT*FROM订单WHERE"p"$订购单号  SELECT*FROM订单WHERE RIGHT(订购单号,1)="p"  
SELECT名称,联系人,电话号码,订单号FROM客户,订购单 WHERE客户.客户号=订购单.客户号AND订购日期IS NULL  SELECT名称,联系人,电话号码,订单号FROM客户,订购单 WHERE客户.客户号=订购单.客户号AND订购日期=NULL  SELECT名称,联系人,电话号码,订单号FROM客户,订购单 FOR客户.客户号=订购单.客户号AND订购日期IS NULL  SELECT名称,联系人,电话号码,订单号FROM客户,订购单 FOR客户.客户号=订购单.客户号AND订购日期=NULL  
SELECT*FROM订单WHERE HEAD(订购单号,1)="p"  SELECT*FROM订单WHERE LEFT(订购单号,1)="p"  SELECT*FROM订单WHERE"p"$订购单号  SELECT*FROM订单WHERE RIGHT(订购单号,1)="p"  
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SELECT*FROM订单WHEREHEAD(订购单号,1)="P"  SELECT*FROM订单WHERELEFT(订购单号,1)="P"  SELECT*FROM订单WHERE"P" $ 订购单号  SELECT*FROM订单WHERERIGHT(订购单号,1)="P"  
SELECT COUNT(DISTINCT 订单号),AVG(数量*单价) FROM产品JOIN订购单名细ON产品.产品号=订购单名细.产品号  SELECT COUNT(订单号),AVG(数量*单价) FROM产品JOIN订购单名细ON产品.产品号=订购单名细.产品号  SELECT COUNT(DISTINCT 订单号),AVG(数量,单价) FROM产品,订购单名细ON产品.产品号=订购单名细.产品号  SELECTCOUNT(订单号),AVG(数量,单价) FROM产品,订购单名细ON产品.产品号=订购单名细.产品号  

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